world

0th

Percentile

Low (mid) resolution World Map

This updated (2013) world map is imported from the Natural Earth project (the 1:50m resolution version). It replaces a much older version based on the CIA World Data Bank II data. That older version is still temporarily included in the package (but deprecated) and can reached as legacy_world. In the future this old package will only be available via txpeh mapdata (v2.3.0).

Keywords
datasets
Usage
data(worldMapEnv)
Details

As of version 3.1, the world database no longer contains any lakes. These have been moved to a separate database called lakes.

Format

The data file is merely a character string which specifies the name of an environment variable which contains the base location of the binary files used by the map drawing functions. This environment variable (R_MAP_DATA_DIR_WORLD) is set at package load time if it does not already exist. Hence setting the environment variable before loading the package can override the default location of the binary datasets.

During a transition period (maps version 3.0--1) it is possible to switch to the old legacy map using the function world.legacy(TRUE) or by setting the setting the environment variable R_MAP_DATA_LEGACY=TRUE prior to loading the package.

References

Richard A. Becker, and Allan R. Wilks, "Maps in S", AT\&T Bell Laboratories Statistics Research Report [93.2], 1993.

Richard A. Becker, and Allan R. Wilks, "Constructing a Geographical Database", AT\&T Bell Laboratories Statistics Research Report [95.2], 1995.

See Also

map,world.legacy,legacy_world,lakes

Aliases
  • world
  • worldMapEnv
Examples
# NOT RUN {
# notice how some polygons extend beyond the [-180,180] interval:
map('world', fill = TRUE, col = 1:10)
# if you wrap at [-180,180], you also can get a clean closure of Antarctica
map('world', fill = TRUE, col = 1:10, wrap=c(-180,180) )
# }
Documentation reproduced from package maps, version 3.3.0, License: GPL-2

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